GrCustomStage Renaming Part 3

Rename all things *CUSTOM_STAGE*, customStage*, and other miscellany

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6769048

git-svn-id: http://skia.googlecode.com/svn/trunk@6081 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index b87089c..eae8ce8 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1444,11 +1444,11 @@
 
 namespace {
 
-void apply_custom_stage(GrContext* context,
-                        GrTexture* srcTexture,
-                        GrTexture* dstTexture,
-                        const GrRect& rect,
-                        GrEffect* stage) {
+void apply_effect(GrContext* context,
+                  GrTexture* srcTexture,
+                  GrTexture* dstTexture,
+                  const GrRect& rect,
+                  GrEffect* effect) {
     SkASSERT(srcTexture && srcTexture->getContext() == context);
     GrContext::AutoMatrix am;
     am.setIdentity(context);
@@ -1458,7 +1458,7 @@
     GrMatrix sampleM;
     sampleM.setIDiv(srcTexture->width(), srcTexture->height());
     GrPaint paint;
-    paint.colorSampler(0)->setEffect(stage, sampleM);
+    paint.colorSampler(0)->setEffect(effect, sampleM);
     context->drawRect(paint, rect);
 }
 
@@ -1484,7 +1484,7 @@
         texture = filter->onFilterImageGPU(&proxy, texture, rect);
     } else if (filter->asNewCustomStage(&stage, texture)) {
         GrAutoScratchTexture dst(context, desc);
-        apply_custom_stage(context, texture, dst.texture(), rect, stage);
+        apply_effect(context, texture, dst.texture(), rect, stage);
         texture = dst.detach();
         stage->unref();
     }